申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US04560686A1
公开(公告)日:1985-12-24
Compounds of the formula ##STR1## (wherein R.sub.1 is a lower alkyl group, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, represent a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a trifluoromethyl group or a lower alkoxycarbonyl group; two adjacent groups of R.sub.2, R.sub.3 and R.sub.4 may combine to form a methylenedioxy group; n is an integer of 2 to 6) or salts thereof, are disclosed. These compounds are useful as agents for treating circulatory diseases because they have hypotensive action and are capable of increasing the cerebral blood flow, decreasing the heart rate and suppressing ventricular arrhythmia due to myocardial ischemia.
公式为##STR1##的化合物(其中R.sub.1是较低的烷基,R.sub.2,R.sub.3和R.sub.4可以相同也可以不同,分别代表氢原子、卤素原子、较低的烷基、较低的烷氧基、羟基、三氟甲基或较低的烷氧羰基;R.sub.2,R.sub.3和R.sub.4中相邻的两个基团可以结合形成亚甲二氧基基团;n为2到6的整数)或其盐,被揭示为治疗循环系统疾病的药物,因为它们具有降压作用,能够增加脑血流量,降低心率并抑制因心肌缺血而引起的室性心律失常。